EP 1041532 A2 20001004 - Method and Apparatus for calibrating a computer-generated projected image
Title (en)
Method and Apparatus for calibrating a computer-generated projected image
Title (de)
Verfahren und Vorrichtung zur Kalibrierung eines rechnererzeugten projizierten Bildes
Title (fr)
Méthode et appareil de calibrage d'une image de projection générée par ordinateur
Publication
Application
Priority
US 28309399 A 19990331
Abstract (en)
An apparatus and method for calibrating a computer-generated projected image to the displayed image viewed on the computer screen. Four or more calibration spots, at least three of which are collinear, arrayed in a predetermined pattern in both the displayed and the projected images, are optically imaged and electronically discriminated in the projected image, their coordinates ascertained and related to the predetermined pattern so as to derive transformation coefficients used in the process of converting a location on the projected image to the corresponding location in the displayed image.
IPC 1-7
IPC 8 full level
G06F 3/033 (2006.01); G06F 3/038 (2013.01); G06F 3/041 (2006.01); G06F 3/042 (2006.01); G06F 3/147 (2006.01); G06F 3/153 (2006.01); G09G 3/00 (2006.01); G09G 3/20 (2006.01); G09G 5/00 (2006.01); H04N 5/74 (2006.01); H04N 9/31 (2006.01); H04N 17/00 (2006.01)
CPC (source: EP KR US)
G06F 3/0386 (2013.01 - EP US); G06F 3/147 (2013.01 - EP US); G06F 3/153 (2013.01 - KR); G09G 3/002 (2013.01 - EP US); H04N 9/3185 (2013.01 - EP US); H04N 9/3194 (2013.01 - EP US)
Citation (examination)
US 5034991 A 19910723 - HAGIMAE KINUYO [JP], et al
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1041532 A2 20001004; EP 1041532 A3 20060628; CN 1156758 C 20040707; CN 1270352 A 20001018; JP 2000357055 A 20001226; JP 3885458 B2 20070221; KR 100452413 B1 20041012; KR 20010020668 A 20010315; US 6292171 B1 20010918
DOCDB simple family (application)
EP 00106722 A 20000329; CN 00104940 A 20000330; JP 2000097077 A 20000331; KR 20000013973 A 20000320; US 28309399 A 19990331